std.regex

Simple pattern matching. Supports literals, . (any character), ^/$ anchors, */+/? quantifiers on a single token, the classes \d (digit), \w (letter, digit or _) and \s (space, tab, newline), and \x for a literal metacharacter (\., \*, \\). No alternation, groups or bracket classes.

import std.regex

Functions

matches

regex.matches(pattern: string, text: string) bool

Returns true if the pattern matches anywhere in the text.

regex.matches("he..o", "hello")  // true
regex.matches("^hi", "hello")   // false

find

regex.find(pattern: string, text: string) int

Returns the index of the first match, or -1 if not found.

find_all

regex.find_all(pattern: string, text: string) [int]

Returns an array of all match start positions.

replace

regex.replace(pattern: string, replacement: string, text: string) string

Replaces the first match with the replacement string.

regex.replace("world", "pluto", "hello world")  // "hello pluto"

replace_all

regex.replace_all(pattern: string, replacement: string, text: string) string

Replaces all matches with the replacement string.

split

regex.split(pattern: string, text: string) [string]

Splits the text at each match of the pattern.

regex.split(",", "a,b,c")  // ["a", "b", "c"]

Example

import std.regex

fn main() {
    let text = "The quick brown fox"
    if regex.matches("qu..k", text) {
        print("Found a match")
    }
    let cleaned = regex.replace_all(" +", " ", "too   many   spaces")
    print(cleaned)
}